Welding tool apron capable of replacing casting

Abstract

The utility model relates to a welding tool apron capable of replacing a casting, which belongs to the technical field of tool shafts and comprises a fixing seat and a connecting seat which are arranged on two sides of a hoe blade, the hoe blade is connected with the fixing seat and the connecting seat through a connecting bolt and a connecting nut, and the connecting bolt is in threaded fit with the connecting nut. The fixing base, the connecting base and the hoe blade are each provided with a connecting through hole allowing the connecting bolt to penetrate through, and a bolt head of the connecting bolt is arranged in a polygonal shape. The connecting base comprises a first plate body and a second plate body, the first plate body is located on the side, away from the fixing base, of the first plate body, an embedding counter bore used for allowing a screw head of the connecting bolt to be embedded is formed in the first plate body in a penetrating mode, the embedding counter bore communicates with the connecting through hole, and the connecting nut is attached to the end face, away from the connecting base, of the fixing base after being screwed down. The hoe has the effect of improving the reliability of mounting the hoe on the cutter shaft.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of knife shaft, especially to a replaceable casting welding tool holder. BACKGROUND

[0002] The mower has very important application in agricultural production, landscaping, forest protection and the like, the knife shaft is a key component installed on the mower, the knife shaft is rotatably arranged on the mower, a plurality of hoes for mowing operation are arranged on the knife shaft, the plurality of hoes are arranged in a spiral shape on the knife shaft, both sides of the hoe are provided with a tool holder welded and fixed with the knife shaft, and the hoe and the tool holder are fixed through bolts and nuts.

[0003] In actual use, it is found that the vibration generated during the use of the mower may cause the bolts and nuts connecting the hoe and the tool holder to be loose, if the user cannot find it in time, the hoe may be separated from the tool holder during the use of the mower, which not only affects the working efficiency of the mower, but also has a great safety hazard to the user. UTILITY MODEL CONTENTS

[0004] In order to improve the reliability of the hoe installed on the knife shaft, the application provides a replaceable casting welding tool holder.

[0005] The application provides a replaceable casting welding tool holder, which adopts the following technical scheme:

[0006] A replaceable casting welding tool holder is arranged on the knife shaft and used for installing the hoe, comprising a fixing seat and a connecting seat arranged on both sides of the hoe, the hoe is connected with the fixing seat and the connecting seat through connecting bolts and connecting nuts, the connecting bolts are threadedly matched with the connecting nuts, the fixing seat, the connecting seat and the hoe are all provided with connecting through holes for the connecting bolts to pass through, and the screw head of the connecting bolt is arranged in a polygonal shape.

[0007] The connecting seat comprises a first plate body and a second plate body, the first plate body is located on the side of the first plate body away from the fixing seat, a matching counterbore for matching the screw head of the connecting bolt is arranged on the first plate body, the matching counterbore is communicated with the connecting through hole, and the connecting nut is tightly combined with the end face of the fixing seat away from the connecting seat.

[0008] Through the matching of the screw head of the connecting bolt arranged in a polygonal shape and the matching counterbore, the connecting bolt is not easy to rotate relative to the connecting seat under the action of no other external force, and the reliability of the hoe installed on the knife shaft is effectively improved.

[0009] Preferably, the connecting seat is formed by welding the first plate body and the second plate body.

[0010] By adopting the technical scheme, the process of manufacturing the connecting seat is simple, mass production is possible, and production efficiency is high.

[0011] Preferably, the side wall of the first plate body is provided with a plurality of welding arc openings.

[0012] By adopting the technical scheme, through the setting of the welding arc openings, the arc can be ensured to penetrate into the root of the weld during the welding of the first plate body and the second plate body, so as to realize root penetration and ensure the welding quality. In addition, the reasonable setting of the welding arc openings can also facilitate the operation of the welder, facilitate the transportation of the strip and the cleaning of the slag, and by adjusting the size and shape of the welding arc openings, the proportion of base metal and filler metal in the welded joint can be controlled to ensure a certain fusion ratio, and the effects of improving crystallization adjustment and improving the quality and reliability of the welded joint can be achieved, thereby effectively ensuring the strength and durability of the connecting seat.

[0013] Preferably, the first plate body and the second plate body for constituting the connecting seat are integrally formed.

[0014] By adopting the technical scheme, the connecting seat has high strength and is not easy to be damaged during use.

[0015] Preferably, a plurality of mounting columns are arranged on the connecting seat and the fixing seat, a mounting slot hole matched with the mounting column is arranged on the knife shaft, and the mounting column and the mounting slot hole cooperate to provide positioning for the mounting of the connecting seat and the fixing seat.

[0016] By adopting the technical scheme, the mounting column and the mounting slot hole cooperate to provide positioning for the mounting of the connecting seat and the fixing seat, so as to facilitate the welding and fixation of the connecting seat and the fixing seat on the knife shaft, and the connecting seat and the fixing seat are not easy to be misaligned with respect to the knife shaft during the mounting process, thereby improving the reliability of the hoe knife mounted on the knife shaft to a certain extent.

[0017] Preferably, the mounting column is made of rubber material, and the mounting column and the mounting slot hole are in interference fit.

[0018] By adopting the technical scheme, the mounting column made of rubber material has a certain elasticity and is convenient to embed into the mounting slot hole, and through the interference fit of the mounting column and the mounting slot hole, the sealing effect can be achieved during positioning, so that foreign matters are not easy to enter the knife shaft and affect the service life of the knife shaft.

[0019] In summary, the present application has at least one of the following beneficial technical effects:

[0020] 1. Under the cooperation of the head of the connecting bolt arranged in a polygonal shape and the embedded hole, without the action of other external forces, the connecting bolt is not easy to rotate with respect to the connecting seat, thereby effectively improving the reliability of the hoe knife mounted on the knife shaft.

[0021] 2. If the first plate and the second plate used to form the connector are integrally formed, the resulting connector will have high strength and will not be easily damaged during use. If the first plate and the second plate used to form the connector are fixed by welding, the production efficiency of the connector will be improved. Connectors made by the two methods can be substituted for each other without affecting normal use, thus increasing the output of connectors. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the cutter shaft structure according to Embodiment 1 of this application.

[0023] Figure 2 This is a schematic diagram of the hoe blade and connecting bolts in Embodiment 1 of this application.

[0024] Figure 3 This is a detailed drawing of the welded connector in Embodiment 1 of this application.

[0025] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Cutter shaft; 11. Fixed seat; 12. Connecting seat; 121. First plate; 122. Second plate; 123. Welding arc; 124. Mounting post; 13. Mounting slot; 2. Connecting bolt; 21. Connecting nut; 22. Connecting through hole; 23. Fitting countersunk hole; 3. Hoe. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-4 The present invention will be described in further detail below.

[0028] Example 1:

[0029] This application discloses a welded tool holder that can replace a casting, which is mounted on the tool shaft 1 and used to mount a hoe blade 3, see reference. Figure 1 and Figure 2, including the fixed seat 11 and the connecting seat 12 arranged on both sides of the hoe 3, the hoe 3 is connected with the fixed seat 11 and the connecting seat 12 through the connecting bolt 2 and the connecting nut 21, the connecting bolt 2 is screwed with the connecting nut 21, the fixed seat 11, the connecting seat 12 and the hoe 3 are all provided with the connecting through hole 22 for the connecting bolt 2 to pass through, the screw head of the connecting bolt 2 is polygonal, in the embodiment of the application, the screw head of the connecting bolt 2 selects the outer hexagonal head, the end face of the connecting seat 12 away from the fixed seat 11 is provided with the embedded counterbore 23 for the screw head of the connecting bolt 2 to fit, the embedded counterbore 23 is communicated with the connecting through hole 22, the connecting nut 21 is combined with the end face of the fixed seat 11 away from the connecting seat 12 after being tightened, under the cooperation of the outer hexagonal head and the embedded counterbore 23, the connecting bolt 2 is not easy to rotate relative to the connecting seat 12 without other external force, which effectively improves the reliability of the hoe 3 installed on the blade shaft 1.

[0030] Referring to Figure 1 and Figure 3 , the connecting seat 12 includes the first plate body 121 and the second plate body 122, the embedded counterbore 23 is located on the first plate body 121, the connecting through hole 22 is located on the second plate body 122, the connecting seat 12 can be made in two ways, the first way is that the first plate body 121 and the second plate body 122 used to constitute the connecting seat 12 are integrally formed, the connecting through hole 22 and the embedded counterbore 23 are processed on the plate body casting through two times of stamping, and the processed connecting seat 12 can be directly welded and fixed with the blade shaft 1; the second way is that the connecting seat 12 is formed by welding the first plate body 121 and the second plate body 122, the embedded counterbore 23 can be processed on the first plate body 121 through the method of laser cutting of steel plate, the connecting through hole 22 can be processed on the second plate body 122 through the method of laser cutting of steel plate, and then the first plate body 121 is fixed with the second plate body 122 through welding to complete the production of the connecting seat 12, the connecting seats 12 made by the two methods can be replaced with each other, and do not affect the normal use of the blade shaft 1.

[0031] The two production methods of the connecting seat 12 have their own advantages, the connecting seat 12 made by the first way has high strength and is not easy to be damaged in the use process, which is a better choice, but the production process is complicated and has high requirements on the process, which is easy to cause low production capacity and affect the production of the machine; and the process of making the connecting seat 12 by the second way is simple and can be mass-produced. Since the screw head of the connecting bolt 2 is located in the embedded counterbore 23, the connecting seat 12 is easy to be damaged due to vibration in the use process of the blade shaft 1, through the setting of the two connecting seats 12, the maintenance efficiency of the blade shaft 1 can be improved to a certain extent without wasting time waiting for the casting.

[0032] Referring to Figure 3When the connecting seat 12 is formed by welding the first plate body 121 and the second plate body 122, a plurality of welding arc openings 123 are arranged on the side wall of the first plate body 121. The welding arc openings 123 can ensure that the electric arc penetrates into the root of the weld during the welding of the first plate body 121 and the second plate body 122, so as to realize root penetration and ensure the welding quality. In addition, the reasonable arrangement of the welding arc openings 123 can also facilitate the operation of the welder, the transportation of the welding rod and the cleaning of the slag. By adjusting the size and shape of the welding arc openings 123, the proportion of the base metal and the filler metal in the welded joint can be controlled to ensure a certain fusion ratio, improve the crystallization adjustment, and improve the quality and reliability of the welded joint, thereby effectively ensuring the strength and durability of the connecting seat 12.

[0033] Embodiment two:

[0034] The difference from embodiment one is that Figure 4 The connecting seat 12 and the fixing seat 11 are both provided with a plurality of mounting columns 124. In the embodiment, two mounting columns 124 are arranged at two ends of the connecting seat 12 or the fixing seat 11. The knife shaft 1 is provided with mounting groove holes 13 matched with the mounting columns 124. The mounting columns 124 and the mounting groove holes 13 are matched to provide positioning for the mounting of the connecting seat 12 and the fixing seat 11 on the knife shaft 1, so as to facilitate the welding and fixing of the connecting seat 12 and the fixing seat 11 on the knife shaft 1, and the connecting seat 12 and the fixing seat 11 are not easy to be dislocated relative to the knife shaft 1 during the mounting process, which improves the reliability of the hoe 3 mounted on the knife shaft 1 to a certain extent.

[0035] Referring to Figure 4 The mounting columns 124 are made of rubber material and are fixed to the connecting seat 12 by gluing. The mounting columns 124 and the mounting groove holes 13 are in interference fit. The mounting columns 124 made of rubber material have a certain elasticity, which facilitates the embedding into the mounting groove holes 13. The interference fit between the mounting columns 124 and the mounting groove holes 13 can play a sealing role during positioning, so that foreign matters are not easy to enter the knife shaft 1 to affect the knife shaft 1, thereby effectively ensuring the service life of the knife shaft 1.

[0036] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. A replaceable casting of a welded blade seat, which is arranged on a blade shaft (1) and is used for mounting a plough blade (3), characterized in that, The utility model relates to a fixing seat (11) and connecting seat (12) arranged on both sides of a hoe (3), the hoe (3) is connected with the fixing seat (11) and connecting seat (12) through connecting bolt (2) and connecting nut (21), the connecting bolt (2) is screwed with connecting nut (21), the fixing seat (11), connecting seat (12) and hoe (3) are all equipped with connecting through hole (22) for the connecting bolt (2) to pass through, and the screw head of connecting bolt (2) is polygonal in shape. The connecting seat (12) includes a first plate body (121) and a second plate body (122), the first plate body (121) is located on the side of the first plate body (121) away from the fixing seat (11), the first plate body (121) is provided with an embedded hole (23) for embedding the screw head of the connecting bolt (2), the embedded hole (23) is in communication with the connecting through hole (22), and the connecting nut (21) is in close contact with the end surface of the fixing seat (11) away from the connecting seat (12) after being tightened.

2. The replaceable casting of a weld blade according to claim 1, characterized in that The connecting seat (12) is formed by welding the first plate body (121) and the second plate body (122).

3. The replaceable casting of claim 2, wherein, A plurality of welding arc openings (123) are arranged on the side wall of the first plate body (121).

4. The replaceable casting of claim 1, wherein, The first plate body (121) and the second plate body (122) used to form the connecting seat (12) are integrally formed.

5. A replaceable casting of a weld insert according to claim 2 or 4, characterized in that A plurality of mounting columns (124) are arranged on the connecting seat (12) and the fixing seat (11), a mounting groove hole (13) is arranged on the cutter shaft (1) and matched with the mounting column (124), and the mounting column (124) and the mounting groove hole (13) are matched to provide positioning for the mounting of the connecting seat (12) and the fixing seat (11).

6. The replaceable casting of claim 5, wherein, The mounting column (124) is made of rubber material and is in interference fit with the mounting groove hole (13).

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